surge arrester, type I+II, 275 V AC, 12.5 kA, replaceable fuse element, 1+N-pole.

The Noark 103334 surge arrester is engineered to safeguard electrical installations from direct, low-intensity lightning strikes. It is a combined Class 1+2 protection device, aligning with the requirements for Lightning Protection Zones LPL III and IV as per EN 62305 standards. This surge arrester is well-suited for use in a 3-phase TN-C network. It is designed to handle a total surge current of 37.5 kA within the electrical system, with potential surge levels reaching 75 or 100 kA, contingent on various factors including the configuration, location of point grounding, and the grounding of the lightning protection system.

Constructed with varistor elements, the EX9UE1+2 12.5 surge arrester features a modular design that ensures a swift response to electrical surges, fulfilling the criteria for both Class I and II protection. The modular nature of this device also facilitates easy and efficient replacement of the functional modules. In the event of burnout due to frequent surge activity, the replaceable fuse element feature allows for quick maintenance without the need for complete unit replacement. This 1+N-pole surge arrester operates at 275 V AC and can handle surge currents up to 12.5 kA. The product's EAN is 8592765033352.